Kuskovsky, IL;
Mourokh, LG;
Roy, B;
Ji, H;
Dhomkar, S;
Ludwig, J;
Smirnov, D;
(2017)
Decoherence in semiconductor nanostructures with type-II band alignment: All-optical measurements using Aharonov-Bohm excitons.
Physical Review B
, 95
, Article 165445. 10.1103/PhysRevB.95.165445.
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Abstract
We examine the temperature dependence of the visibility of the excitonic Aharonov-Bohm peak in type-II quantum dots. We obtain a functional temperature dependence that is similar to that determined by transport experiments, namely, with the T − 1 term due to electron-electron collisions and the T − 3 term due to electron-phonon interactions. However, the magnitude of the latter term is much smaller than that for the transport electrons and similar to the interaction strength of the exciton-phonon coupling. Such suppressed electron-phonon interaction ushers a way for all-optical studies of decoherence processes in semiconductor nanostructures as other dephasing mechanisms become more pronounced.
| Type: | Article |
|---|---|
| Title: | Decoherence in semiconductor nanostructures with type-II band alignment: All-optical measurements using Aharonov-Bohm excitons |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1103/PhysRevB.95.165445 |
| Publisher version: | https://doi.org/10.1103/PhysRevB.95.165445 |
| Language: | English |
| Additional information: | This is the published version of record. For information on re-use, please refer to the publisher’s terms and conditions. |
| UCL classification: | UCL UCL > Provost and Vice Provost Offices > UCL BEAMS UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Maths and Physical Sciences > London Centre for Nanotechnology |
| URI: | https://discovery-pp.ucl.ac.uk/id/eprint/10053765 |
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